Playing devils advocate here but they did know what they were signing up too and at 21 quid the odds were pretty favourable that the price would go up rather than down at some point.
Yes, do not disagree with your sentiment. My post said the figures kinda rub it in. And that is all. Most of the growers I know who have another year to run are accepting of the fact but have no intention of signing up to extend the contract for anther year to gain the £25tonne. They consider the rainbow will be forever moving ahead. Will be interesting to know if a few months the amount of BS beet on longer than one year contracts. Cheers.